54 results about "Potassium superoxide" patented technology

The subject invention provides a potentially economically viable method for the preparation of hydrogen peroxide (H2O2) in deep eutectic solvents (DES). H2O2 is then used for the destruction of small to large quantities of sulfur and nitrogen mustards and lewisite, their homologous / analogues, and similar chemical warfare agents at ambient conditions in DES without producing any toxic by-products. Furthermore, H2O2 has been used for the destruction of small to large quantities of halogenated hydrocarbons, their homologous / analogues, and similar hazardous chemicals at ambient conditions. H2O2 can be formed by either the electrochemical reduction of oxygen in DES in the presence of water or by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in DES in the presence of water, with / without chemicals used for the enhancement of the solubility of the metal superoxide in the DES, e.g. crown ethers.

The subject invention provides a potentially economically viable method for the preparation of reactive superoxide ion in deep eutectic solvents (DES). The superoxide ion can be used for many applications, e.g. the degradation of hazardous chemicals at ambient conditions or in the synthesis of some special chemicals, e.g. carboxylic acids, aldehydes, and ketones from the corresponding alcohols. The superoxide ion can be formed by either the electrochemical reduction of oxygen in DES or by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in DES, with / without chemicals used for the enhancement of the solubility of the metal superoxide in the DES, e.g. crown ethers.

The subject invention provides a potentially economically viable method for the preparation of hydrogen peroxide (H2O2) in deep eutectic solvents (DES). H2O2 is then used for the destruction of small to large quantities of sulfur and nitrogen mustards and lewisite, their homologous / analogues, and similar chemical warfare agents at ambient conditions in DES without producing any toxic by-products. Furthermore, H2O2 has been used for the destruction of small to large quantities of halogenated hydrocarbons, their homologous / analogues, and similar hazardous chemicals at ambient conditions. H2O2 can be formed by either the electrochemical reduction of oxygen in DES in the presence of water or by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in DES in the presence of water, with / without chemicals used for the enhancement of the solubility of the metal superoxide in the DES, e.g. crown ethers.

The subject invention provides a potentially economically viable process for the destruction of small to large quantities of halogenated hydrocarbons, their homologous / analogues, and similar hazardous chemicals at ambient conditions using superoxide ion in deep eutectic solvents. The superoxide ion is either electrochemically generated by the reduction of oxygen in deep eutectic solvents or chemically by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in deep eutectic solvents.

The invention discloses a potassium superoxide air regenerating device for emergent risk avoiding under coal mines, which comprises a device main body, wherein the device main body adopts a hollow cavity structure; the device main body comprises an air inlet area, a reaction area and an air discharge area from the bottom up sequentially; a lower air permeable diaphragm is arranged between the air inlet area and the reaction area; the reaction area is divided into an upper cavity, a middle cavity and a lower cavity; middle air permeable diaphragms are arranged between the three cavities; and each of the upper cavity, the middle cavity and the lower cavity is provided with a potassium superoxide reactor inside. The potassium superoxide air regenerating device is perfect and reasonable in structure, convenient in use and easy to maintain; the device requires no power when working; no substance harmful to human and the environment is generated during the working process and after the reaction is terminated; and while CO2 is eliminated, harmful gases such as CH4, CO, H2S, SO2, NOX and the like are absorbed and cleansed. The potassium superoxide air regenerating device provided by the invention is controllable and can be used for continuously supplying oxygen to airtight space.

The invention belongs to the technical field of purification of chemical products, and particularly relates to a composite oxidizer and a method for preparing high efficiency liquid chromatography eluate acetonitrile by using the same. The composite oxidizer is composed of potassium superoxide, potassium hydroxide and sodium hydroxide. The method for preparing high efficiency liquid chromatography eluate acetonitrile by using the composite oxidizer comprises the following steps: adsorbing the raw material acetonitrile with the content of more than 99.5% with an active aluminum oxide-activated carbon-3A molecular sieve three-layer adsorption bed, oxidizing by the composite oxidizer, rectifying, and filtering to obtain the high efficiency liquid chromatography eluate acetonitrile. The composite oxidizer provided by the invention overcomes the defect of long oxidization time in the use of the single oxidizer, saves the reaction time, and has better oxidization effect; the preparation method has the advantage of simple and stable operation, and is suitable for large-scale production; and when the method is used for preparing the chromatography acetonitrile, the product yield can reach more than 95%, and the product quality achieves the quality level of like products abroad.

The present disclosure relates to a mask providing oxygen and removing water vapor in which a functional layer for oxygen production, moisture removal and better air quality is embedded; the functional layer can be inserted between an outer layer and an inner layer of the mask, taken as an inner layer or a sole layer, or held in a receiving pocket or attach / adhere to an innermost side of the mask; the functional layer comprises metal peroxide, metal superoxide, metal oxide and nonmetal oxide to remove water vapor and provide oxygen; the metal peroxide is selected from the group consisting of magnesium peroxide, potassium peroxide, sodium peroxide and calcium peroxide; the metal superoxide comprises potassium superoxide or sodium superoxide; the metal oxide is selected from the group consisting of magnesium oxide, calcium oxide and sodium oxide; the nonmetal oxide can be silicon dioxide.

The invention discloses salt colloidal electrolyte for a storage battery and a preparation method of the salt colloidal electrolyte. The salt colloidal electrolyte comprises the following components in percentage by weight: 10-20% of silica gel agent, 20-30% of electrolyte, 5-10% of compound additive, 0.5-1% of impregnating agent and 1-2% of colloid stabilizer, wherein the silica gel agent is silicon dioxide with the particle size of 10-30 nanometers; the electrolyte is sulfuric acid at a concentration of 20-30%; the compound additive contains sodium sulfate, lithium sulfate, ammonium sulfate, stannous sulfate, phosphoric acid and potassium superoxide; the impregnating agent is silicone oil; the colloid stabilizer is carboxymethyl cellulose. The salt colloidal electrolyte is low in internal resistance, high in recharging conversion rate, low in self discharge, free of water loss, large in battery capacity, long in service life and completely free from maintenance, and has good performance at a high or low temperature.

Disclosed herein are oxygen generating compositions. More specifically, the oxygen generating compositions comprise potassium superoxide or sodium peroxide, a material for stabilizing the reactivity and oxidizing power of potassium superoxide or sodium peroxide, and optionally at least one selected from an oxidation catalyst of carbon monoxide, a material for improving the moldability and processability of the composition and a material for increasing initial carbon dioxide absorption rate. The oxygen generating compositions can be utilized in a wide range of applications. The material for stabilizing the reactivity and oxidizing power of potassium superoxide or sodium peroxide is selected from calcium hydroxide (Ca(OH)2), aluminum hydroxide (Al(OH)3), magnesium hydroxide (Mg(OH)2), barium hydroxide (Ba(OH)2), calcium carbonate (CaCO3), talc and clay. The oxidation catalyst of carbon monoxide is selected from copper oxide (CuO), manganese oxide (MnO) and a mixture thereof (hopcalite). The material for improving the moldability and processability of the oxygen generating compositions is selected from glass powder, glass fiber, ceramic fiber, steel wool, bentonite, kaolinite, sodium silicate and potassium silicate. Since the oxygen generating compositions have stabilized reactivity and oxidizing power, they can be used in household goods. In addition, since the oxygen generating compositions have a higher compressive strength than pure potassium superoxide or sodium peroxide, they can be processed into various shapes.

The subject invention provides a potentially economically viable method for the preparation of reactive superoxide ion in deep eutectic solvents (DES). The superoxide ion can be used for many applications, e.g. the degradation of hazardous chemicals at ambient conditions or in the synthesis of some special chemicals, e.g. carboxylic acids, aldehydes, and ketones from the corresponding alcohols. The superoxide ion can be formed by either the electrochemical reduction of oxygen in DES or by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in DES, with / without chemicals used for the enhancement of the solubility of the metal superoxide in the DES, e.g. crown ethers.

The present invention provides a mixed type oxygen generating pharmaceutical for chemical oxygen self-rescuer, which is composed of flaky or irregular granular potassium superoxide oxygen generating agent and strip, flaky, irregular granular or other shaped dry carbon dioxide absorbent. Part of the carbon dioxide gas breathed out by the wearer is absorbed by the added carbon dioxide absorbent, as a result, the carbon dioxide amount reacting with the potassium superoxide oxygen generating agent is reduced, and the utilization ratio of oxygen produced by the potassium superoxide oxygen generating agent is improved, furthermore, the problems of respiratory resistance and inhalation temperature increase caused by fusion of the potassium superoxide oxygen generating agent, which is used separately in the later stage of the reaction are solved. The added carbon dioxide absorbent includes dry calcium hydroxide, soda lime and their mixture.

The invention relates to a method for preparing potassium superoxide powder through a metallic potassium spray-oxidizing process. The method comprises the following steps that liquid potassium and compressed air are atomized through an internally and externally embedded spray gun, and the potassium superoxide powder is prepared, wherein the spray gun comprises an external cavity body and an internal cavity body, the external cavity body is used for flowing the compressed air, and the internal cavity body is used for flowing the liquid potassium. The flow velocity of the compressed air is 6-8 meters / second, and the flow velocity of the liquid potassium is 0.3-0.5 meter / second; the reaction temperature of the liquid potassium and the compressed air is 260-300 DEG C. In the potassium superoxide powder prepared by using the method, the oxygen content is higher than 31%, and the volume density can reach 0.565 g / cm<3>. The potassium superoxide powder prepared by using the method can be usedfor producing a 65-potassium regenerator and an oxygen generation agent in an isolated type self-rescuer.

The invention discloses an air regeneration system for coal mine emergency refuge, belonging to the technical field of coal mine danger removal lifesaving. The system is characterized by being composed of an air regeneration drug plate and an air regeneration device, wherein the air regeneration drug plate consists of a net clip and chemical regeneration drug particles; the chemical regeneration drug particles are put into the net clip; the net clip is a flat cuboid consisting of a metal wire net and angle iron; the air regeneration device is made from a stainless steel plate, and a cover is arranged at the top and bottom respectively; a fixing frame is arranged at the middle part of the cover; convection holes are formed on the two sides of the box body; two layers of support frames made from steel wires are arranged in the air regeneration device; and 14 air regeneration drug plates can be mounted on each layer. The chemical regeneration drug particle is prepared from 75-90% of potassium hyperoxide, 2-5% of kieselguhr, 4-10% of calcium peroxide and 4-10% of calcium hydroxide by the following steps of: uniformly mixing the components according to the proportion; tabletting the mixture in a tablet press; crushing; and screening and selecting drug particles with particle sizes of 3-7mm. Through the invention, the shortcomings of the traditional potassium hyperoxide oxygen supply system are overcome, the oxygen release speed of the drug is steady, and the reaction product is easy to dispose.

The invention discloses a ventilating material mouth mask with functions of oxygen supply and dehumidifying, and a functional layer of the mouth mask can supply oxygen and achieve dehumidifying , so as to improve the quality of air in the mouth mask. The functional layer is located between an outermost layer and an innermost layer, or at the innermost layer, or at a unique layer, or in a storage bag, or is pasted at the innermost side of the mouth mask. The functional layer comprises a metallic peroxide, a metallic superoxide, a metallic oxide, and a non-metallic oxide, wherein the metallic peroxide, the metallic superoxide, the metallic oxide and the non-metallic oxide respectively have functions of reducing humidity and generating oxygen. The metallic peroxide is selected from a group composed of a magnesium peroxide, a potassium peroxide, a sodium peroxide, and a calcium peroxide. The metallic superoxide contains potassium superoxide or sodium superoxide. The metallic oxide is selected from a group composed of magnesium oxide, calcium oxide, and sodium oxide. The non-metallic oxide is silicon dioxide.

The invention relates to a rooting agent containing microcrystalline cellulose. The rooting agent is prepared from the raw materials: the microcrystalline cellulose, sodium pyrophosphate, urinary formaldehyde powder, an artemisia apiacea extract, a flos lonicerae extract, an artemisia vulgaris extract, polylactic resin, potassium superoxide, black iron oxide, a caulis parthenocissi tricuspidatae leaching agent and semen plantaginis gum. The invention also provides a preparation method of the rooting agent containing the microcrystalline cellulose. The method comprises a base material preparation step: the raw materials of the rooting agent such as the caulis parthenocissi tricuspidatae leaching agent, the urinary formaldehyde powder and the sodium pyrophosphate are stirred and mixed for 17 to 19min according to the fraction in the embodiment. The rooting agent prepared by the invention is used for cutting and planting sweet-scented osmanthus cutting slips in a saline and alkaline land, so that the morbidity of yellows of the sweet-scented osmanthus cutting slips is reduced to be 0 from 5.3 percent; the morbidity of anthracnose of the sweet-scented osmanthus cutting slips is reduced to be 0.1 percent to 0.2 percent from 10.3 percent; the morbidity of brown spot of the sweet-scented osmanthus cutting slips is reduced to be 0 from 6.8 percent.

The invention discloses a compound oxygen generating agent and a preparation method thereof. The compound oxygen generating agent comprises 80-85% of sodium percarbonate, 15-20% of potassium superoxide and 0.1-0.2% of manganese dioxide. The preparation method comprises the steps of pulverizing sodium percarbonate to 80-120 mesh powder with a pulverizer, oven-drying potassium superoxide and manganese dioxide, proportionally mixing, feeding the mixed materials into a rotary tablet machine, and making into tablets. Compared with the simple sodium percarbonate oxygen generating agent, the inventive compound oxygen generating agent improves oxygen generation speed and prolongs service life by 10-15% under the same quantity, and has the advantages of simple preparation method and convenient service.

The invention discloses an automatic edge polishing device for a potassium superoxide plate. The automatic edge polishing device comprises a stand, a substrate convenient for fixing is arranged at the lower part of the stand, the automatic edge polishing device further comprises a swing mechanism arranged on the substrate, a lifting mechanism arranged on the swing mechanism and capable of swinging along with the swing mechanism, an edge polishing mechanism arranged at the upper part of the stand, and a chain conveying mechanism; the chain conveying mechanism is connected with the stand, the chain conveying mechanism is used for bearing the potassium superoxide plate and conveying the potassium superoxide plate to an edge polishing station or delivering the potassium superoxide plate from the edge polishing station, and the lifting mechanism matches with the edge polishing mechanism to polish the edge of the potassium superoxide plate located at the edge polishing station in the lifting process; the automatic edge polishing device further comprises a dust collector mechanism arranged at the lower part of the stand and further comprises a control mechanism. The automatic edge polishing device for the potassium superoxide plate is high in automatic degree and uniform in polishing, the tedious work due to manually carrying the potassium superoxide plate and manually grinding four edges is avoided, the labor cost is lowered, and the production efficiency is improved.

The subject invention provides a potentially economically viable process for the destruction of small to large quantities of sulfur and nitrogen mustards and lewisite, their homologous / analogues, and similar chemical warfare agents at ambient conditions without producing any toxic by-products. The process uses the superoxide ion that is either electrochemically generated by the reduction of oxygen in deep eutectic solvents or chemically by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in deep eutectic solvents.

The invention discloses a convenient all-weather chemical oxygenation device which comprises an oxygen inhalation tube accommodating room, a water storage room and an oxygen generating reaction room. Powdery potassium superoxide and manganese dioxide are placed in the oxygen generating reaction room; an oxygen outlet guide tube with a first switch and a water inlet tube with a second switch are arranged in the water storage room; one end of the oxygen outlet guide tube is connected with the oxygen generating reaction room, the other end of the oxygen outlet guide tube penetrates through the water storage room to be communicated with the oxygen inhalation tube accommodating room, and a retractable oxygen inhalation tube comprising an oxygen inhalation tube and a buffer tube is connected onto the oxygen outlet guide tube; the water inlet tube is communicated with the water storage room, and the quantity of water flowing into the oxygen generating reaction room is controlled via the second switch; and the oxygen inhalation tube accommodating room for accommodating the retractable oxygen inhalation tube is arranged on the water storage room, a mask is connected onto the retractable oxygen inhalation tube, an elastic band and an adjusting card are arranged on the mask, and an oxygen inhalation tube button is further disposed on the water storage room. The convenient all-weather chemical oxygenation device is simple and practical, is convenient to operate and carry, safe in use and free of any negative effects, and is unaffected by factors such as external environments, weather, time and air temperature.

The subject invention provides a potentially economically viable process for the destruction of small to large quantities of sulfur and nitrogen mustards and lewisite, their homologous / analogues, and similar chemical warfare agents at ambient conditions without producing any toxic by-products. The process uses the superoxide ion that is either electrochemically generated by the reduction of oxygen in ionic liquids or chemically by dissolving Group 1 (alkali metals) or Group 2 (alkaline earth metals) superoxides, e.g. potassium superoxide, in ionic liquids.

The invention relates to a non- aqueous lithium-air battery. A lithium-air electrochemical cell is provided. The battery comprises: an anode compartment; a cathode compartment; and a lithium ion conductive membrane separating the anode compartment from the cathode compartment. The anode compartment comprises an anode having lithium, a lithium alloy or a porous material capable of adsorption and release of lithium and a lithium ion electrolyte, while the cathode compartment comprises an air electrode, an ionic liquid capable of supporting the reduction of oxygen and a dissolved concentration of potassium superoxide. A lithium ion concentration in the cathode compartment is low in comparison to the concentration of potassium ion.

The embodiment of the invention relates to an air regeneration system and a control method thereof, relates to the technical field of air regeneration, and mainly aims to provide a safe, controllable and miniaturized air regeneration system and a control method thereof. The air regeneration system comprises a potassium superoxide agent feeder; a water feeder; an inlet of the carbon dioxide absorber is connected with a potassium hydroxide solution outlet of the mixed reaction oxygen generator, a spiral blade is arranged in the carbon dioxide absorber, the height of an outlet of the carbon dioxide absorber is lower than the top of the spiral blade and higher than the bottom of the spiral blade, and the air inlet channel is provided with an air inlet fan. And the carbon dioxide absorber is used for mixing a potassium hydroxide solution flowing in from the potassium hydroxide solution outlet with carbon dioxide in air entering from the air inlet channel. Compared with a spraying type carbon dioxide absorber, the spiral blade structure is adopted, a large spraying space does not need to be occupied, and therefore the size of an air regeneration system is easy to achieve miniaturization.

The invention discloses a potassium superoxide medical plate for an underground emergency refuge air regeneration device in a coal mine. The potassium superoxide medical plate comprises the following raw materials in part by weight: 94 to 96 parts of oxygenating and carbon absorbing medical powder and 4 to 6 parts of reinforcing agents; and the oxygenating and carbon absorbing medical powder comprises 75 to 85 weight percent of KO2, 8 to 13 weight percent of K2O2 and 7 to 12 weight percent of K2O. According to the potassium superoxide medical plate, the content of all active ingredients is appropriate, so that the oxygen releasing rate is reduced, the oxygen is stably and reliably generated, and the ratio of the absorbed carbon dioxide to the released oxygen is matched with the respiratory quotient of a human body; by adding auxiliary adding agents, the porosity of the medical plate is increased under the condition that the structural strength is not changed, so that the carbon dioxide penetration capacity is improved, and absorption of the medical plate to the carbon dioxide is promoted; and the humidity application range of the medical plate is expanded to over 90 percent, but the humidity application range of the conventional potassium superoxide medical plate is not more than 60 percent. The potassium superoxide medical plate is suitable for closed large spaces, high-temperature and high-humidity environments and crowded places.

The invention discloses a convenient all-weather chemical oxygenation device which comprises an oxygen inhalation tube accommodating room, a water storage room and an oxygen generating reaction room. Powdery potassium superoxide and manganese dioxide are placed in the oxygen generating reaction room; an oxygen outlet guide tube with a first switch and a water inlet tube with a second switch are arranged in the water storage room; one end of the oxygen outlet guide tube is connected with the oxygen generating reaction room, the other end of the oxygen outlet guide tube penetrates through the water storage room to be communicated with the oxygen inhalation tube accommodating room, and a retractable oxygen inhalation tube comprising an oxygen inhalation tube and a buffer tube is connected onto the oxygen outlet guide tube; the water inlet tube is communicated with the water storage room, and the quantity of water flowing into the oxygen generating reaction room is controlled via the second switch; and the oxygen inhalation tube accommodating room for accommodating the retractable oxygen inhalation tube is arranged on the water storage room, a mask is connected onto the retractable oxygen inhalation tube, an elastic band and an adjusting card are arranged on the mask, and an oxygen inhalation tube button is further disposed on the water storage room. The convenient all-weather chemical oxygenation device is simple and practical, is convenient to operate and carry, safe in use and free of any negative effects, and is unaffected by factors such as external environments, weather, time and air temperature.

The invention discloses a cavitation bubble oxygen production technology for a submarine. The technology comprises a propeller, a propeller cover and a spindle and is technologically characterized in that absorption holes which can absorb cavitation foams generated by the propeller are formed in the whole inner wall of the propeller cover; and the absorption holes are connected to an oxygen collection device in the submarine via a gas collecting tube. The technology disclosed by the invention has the advantages that oxygen can be produced "for free" during a voyage, so that consumption of sodium carbonate and oxygen generated from the reaction between sodium peroxide (Na2O2) solids or potassium superoxide solids and carbon dioxide can be greatly reduced; the use cost for the oxygen can be greatly reduced; generation and disposal of pollutants or wastes can be reduced; and thus burdens can be alleviated and effective use space can be left for the submarine.

The invention relates to a safe air regeneration device for a coal mine underground emergency shelter. The device comprises an air regeneration unit, and is characterized in that the air regeneration unit comprises a shell and a potassium superoxide medicinal plate group arranged in the shell, wherein an air inlet passage and an air outlet passage are formed in the shell. According to the device, reaction temperature is greatly reduced, and the pressure of a cooling system is reduced. The air regeneration device has the beneficial effects that the oxygen yield can be controlled, the oxygen concentration can be kept between 18.5 to 22 percent all the time according to the number and the state of people in a pit, and energy resources are not required; the device is easy and convenient to operate, and secondary disasters caused by maloperation can be avoided; the device is high in safety; the system is simple; and the air regeneration cost can be greatly lowered, and huge social benefits and economic benefits after the device is popularized and used are created.

The invention discloses a synthesis method of salidroside, which is implemented by taking p-hydroxyphenylethyl alcohol as a raw material through the steps of firstly, protecting hydroxyl by using methoxy-chloromethyl ether (MOMCl) or benzene sulfonyl chloride, benzoyl chloride and the like, and carrying out acylation and bromination on glucose so as to prepare tetra-acetyl-1-bromoglucose; then, reacting the protected p-hydroxyphenylethyl alcohol with the tetra-acetyl-1-bromoglucose in the presence of potassium superoxide or triethylamine and other organic alkalis, silver nitrate, silver carbonate and the like; and feeding hydrogen chloride gas into methanol so as to remove protecting groups on phenolic hydroxyl groups. According to the invention, by simplifying the synthesis process route, the reaction selectivity is improved, the production cost of salidroside is significantly reduced, and the increasing demands of people on salidroside are satisfied better.

The invention discloses a fertilizing method for facilitating growth of carya illinoensis seedlings, and belongs to the technical field of plant seedling fertilization. The fertilizing method includes the steps of seedling selecting, fertilizer weighing, fertilizer treating and fertilizer applying. By controlling amounts of urea, calcium superphosphate and potassium chloride during fertilizing, a nitrogen application rate (calculated by pure N (nitrogen)) is ensured to be 1-3 grams per plant, a phosphorus application rate (calculated by P2O5 (phosphorus pentoxide)) is ensured to be 0.5-1.5 grams per plant, a potassium application rate (calculated by KO2 (potassium superoxide)) is ensured to be 0.5-1.5 grams per plan, and the highest growth rate is ensured under the circumstance of applying the minimum amount of fertilizer. The fertilizing method has the advantages that mixture ratio of the fertilizer is controlled precisely, utilization rate of the fertilizer is guaranteed, and planting cost is saved.

The invention relates to a potassium superoxide piece molding method which comprises the following steps: uniformly mixing potassium superoxide powder with auxiliary materials so as to obtain a powdermixture, putting the powder mixture into a cylindrical mold which is 6-12mm in diameter and 2.5-2.7mm in height, and performing pressing molding at pressure of 80-90MPa, thereby obtaining a potassiumsuperoxide piece, wherein the auxiliary materials account for 15-16% of the total mass of the potassium superoxide powder; the auxiliary materials comprise potassium hydroxide and copper oxychloridein a mass ratio of 14:(1-2). The potassium superoxide piece prepared by using the method has the characteristics that the strength of the potassium superoxide piece is improved, and the specific surface area of the potassium superoxide piece is not reduced.